1. an advertisement claims that three out of five dentists prefer a particular type of
toothpaste. after researching the study, you find that the toothpaste company paid for it.
why should you be skeptical of the advertisement's claims?
o because the dentists are showing experimental bias
because only dentists were involved in the study
o because the organization that paid for the study is biased
o because you do not like the toothpaste being advertised

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?

What will a hypothesis become if supported by repeated expermentation

The image shows a sandstone formation with visible bands of different colors. what do the bands indicate about how this sedimentary rock was formed? choose two answers. a). the rock was made from more than one material. b). water was absent during the compaction and cementation process. c). sediments and other matter were deposited in layers before lithification. d). the rock was stretched horizontally by the pressure from surrounding rocks. e). layers of hot liquid in the rocks cooled and solidified at different tempatures